DEXTROROTATORY ISOMER 6-(5-CHLORO-2-PYRIDYL)-5-(4-METHYL-1- -PIPERAZINYL)CARBONYLOXY-7-OXO-6,7-DIHYDRO-5H- -PYRROLO£3,4-BPYRAZINE, THE METHOD OF ITS PREPARATION, PHARMACEUTICAL COMPOSITION WITH ITS CONTENT, AND ITS USE

摘要

Dextrorotatory isomer 6-(5-chloro-2-pyridyl)-5-(4-methyl-1- -piperazinyl)carbonyloxy-7-oxo-6,7-dihydro-5H- -pyrrolo[3,4-b]pyrazine, the method of its preparation, pharmaceutical compositions in which this derivative is comprised and which can be used as sedative and hypnotic agents, and usage of this dextrorotatory isomer is described.